surfacing a table in EMC

[lumberjack_jeff]

For those of you who have surfaced your table using EMC, do you have any g code you could share?

I tried using the following which was generated by a script made by Switcher on CNCzone.

G90
Z0.25 F100.0
X0.0 Y0.0 F100.0
Z-0.12 F25.0
G91 F50.0
X99
Y0.625
X-99
Y0.625
X99
Y0.625
.... repeat the last two lines 77 times

EMC didn't like it.

[Jayson]

Hi Jeff,

when I faced my table I used the generator located at the following link

http://wiki.linuxcnc.org/cgi-bin/emcinfo.pl?Simple_EMC_G-Code_Generators

Scroll down until you find "facing Software"

Worked a treat for me.

Jayson.

[lumberjack_jeff]

Thank you so much for this Jayson! What a cool link!

[lumberjack_jeff]

FWIW, a variant of this code

%

G17

#1=0 (X1)
#2=0.375 (Y1)
#3=98 (X2)
#4=49.125 (finished Y area minus cutter radius)
#5=0

G0 Z [0.5]
G0 X #1 Y [#2 + #5]

G1 X #1 Y [#2 + #5] Z0 F150 (set up feed)

O101 WHILE [#5 LT [#4-#2]]

G1 X #1 Y [#2 + #5] Z0
G1 X #3 Y [#2 + #5] Z0

G0 Z [0.5]

#5 = [#5 + .65] (increments for the next reverse cut)

G0 Y [#2 + #5]
G1 Z0
G1 X #1
G0 z [0.5]

#5 = [#5+.65] ( increments for the next cut)
O101 ENDWHILE


G1 X #1 Y [#4 ] Z0
G1 X #3 Y [#4 ] Z0

G0 Z [0.5]
G0 X #1

%
...was suggested to me. I tweaked it for my table size, the depth of cut I wanted, the z-clearance I felt necessary, the speeds at which I comfortably cut and to make it bidirectional (surfacing with a 3/4" bit is a tedious affair when the cutter only mills one way.)

[sailfl]

Jeff,

An Onsrud 91-000 1.25" Spoilboard surfacing cutter makes quick work of resurfacing the top. The price is reasonable.